The Make class provides the ugen function, and has instances
for record constructors for all unit generators that take at least
one parameter.

There are two primary use scenarios.

In the first individual record variants are used in isolatation for
UGens having many inputs where default values are required

In the second graphs are predominantly constructed using record
syntax for clarity.

In the latter case clarity is greatly enhanced using record field
disambiguation as is present in ghc since version 6.8.2.

The record variants are generated by a program using the database
at hsc3-db and are not stored in the darcs repository. This
database is auto-generated from the supercollider language unit
generator bindings and is not entirely accurate.

In particular neither argument re-ordering or multiple channel
collapse are correctly annotated, see for instance the Out unit
generator in the help file analog-bubbles.hs, where explicit bus
numbering is required.